Ad Seller Pro was mainly an ad selling system to allow people to buy ad space on your forums.But also includes more ad placements that ad management mod so you can make more money and includes better tracking options.

I was thinking about a good time to do this, as I don't want to apply it and it cause some downtime while we change the index.template.php.

Looking at the error message, I think the only changes it wasn't able to apply was to index.template.php, so I should be able to upload it here, then when changes are applied, I can upload the new version, and then apply the changes? I know I'll still get the error, but the changes will have already been made. Is that correct?